<template>
  <div class="cart">
    <order-header title='我的订单'>
      <template v-slot:tip>
        <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
      </template>
    </order-header>
    <div class="wrapper">
      <div class="container">
        <div class="cart-box">
          <ul class="cart-item-head">
            <li class="col-1">
              <span class="checkbox" v-bind:class="{'checked':allChecked}" @click="toggleAll"></span>
              全选
            </li>
            <li class="col-3">商品名称</li>
            <li class="col-1">单价</li>
            <li class="col-2">数量</li>
            <li class="col-1">小计</li>
            <li class="col-1">操作</li>
          </ul>
          <ul class="cart-item-list">
            <li class="cart-item" v-for="(item,index) in cartList" v-bind:key="index">
              <div class="item-check">
                <span class="checkbox" v-bind:class="{'checked':item.productSelected}" @click="updateCart(item)"></span>
              </div>
              <div class="item-name">
                <img v-lazy="item.productMainImage" alt="">
                <span>{{item.productName + ' , ' + item.productSubtitle}}s</span>
              </div>
              <div class="item-price">{{item.productPrice}}</div>
              <div class="item-num">
                <div class="num-box">
                  <a href="javascript:;" @click="updateCart(item,'-')">-</a>
                  <span>{{item.quantity}}</span>
                  <a href="javascript:;" @click="updateCart(item,'+')">+</a>
                </div>
              </div>
              <div class="item-total">{{item.productTotalPrice}}</div>
              <div class="item-del" @click="delProduct(item)"></div>
            </li>
          </ul>
        </div>
        <div class="order-wrap clearfix">
          <div class="cart-tip fl">
            <a href="/#/index">继续购物</a>
            共<span>{{cartList.length}}</span>件商品，已选择<span>{{checkedNum}}</span>件
          </div>
          <div class="total fr">
            合计：<span>{{cartTotalPrice}}</span>元
            <a href="javascript:;" class="btn" @click="order">去结算</a>
          </div>
        </div>
      </div>
    </div>
    <service-bar></service-bar>
    <nav-footer></nav-footer>
    <modal title='提示' btnType='2' :show='isDelete' cancleText='确定' @cancle='isDelete = false'>
      <template v-slot:body>
        <div>
          删除成功
        </div>
      </template>
    </modal>
  </div>
</template>

<script>
import OrderHeader from '../components/OrderHeader.vue'
import ServiceBar from '../components/ServiceBar.vue'
import NavFooter from '../components/NavFooter.vue'
import Modal from '../components/Modal.vue'

export default {
  name: 'cart',
  components: {
    OrderHeader,
    ServiceBar,
    NavFooter,
    Modal
  },
  // 定义属性
  data () {
    return {
      isDelete: false,
      cartList: {},//购物车列表
      allChecked: false,//是否全选
      cartTotalPrice: 0,//选中商品总价格
      checkedNum: 0,//选中商品数量
    }
  },
  // 计算属性，会监听依赖属性值随之变化
  computed: {
  },
  // 监控data中的数据变化
  watch: {},
  // 方法集合
  methods: {
    // 获取购物车列表
    getCartList () {
      this.axios.get('/carts').then(res => {
        this.renderData(res)
      })
    },
    // 控制全选功能
    toggleAll () {
      let url = this.allChecked ? '/carts/unSelectAll' : '/carts/selectAll'
      this.axios.put(url).then(res => {
        this.renderData(res)
      })
    },
    // 公共赋值
    renderData (res) {
      this.cartList = res.cartProductVoList || [],
        this.cartTotalPrice = res.cartTotalPrice,
        this.allChecked = res.selectedAll
      this.checkedNum = this.cartList.filter(item => item.productSelected).length
    },
    // 更新购物车数量和购物车单选状态
    updateCart (item, type) {
      let quantity = item.quantity,
        selected = item.productSelected
      if (type == '-') {
        if (quantity == 1) {
          console.log(111111);
          this.$message.warning('商品请保持一件')
          return
        } else {
          --quantity
        }
      } else if (type == '+') {
        if (quantity >= item.productStock) {
          this.$message.warning('暂无足够存货')
          return
        } else {
          ++quantity
        }
      } else {
        selected = !item.productSelected
      }
      this.axios.put(`/carts/${item.productId}`, {
        quantity,
        selected
      }).then(res => {
        this.renderData(res)
      })

    },
    // 删除购物车商品
    delProduct (item) {
      this.axios.delete(`/carts/${item.productId}`).then(res => {
        this.renderData(res)
        this.isDelete = true
      })
    },
    // 购物车下单
    order () {
      let isSelected = this.cartList.every(item => !item.productSelected)
      if (isSelected) {
        this.$message.warning('请选择您的商品')
      } else {
        this.$router.push('/order/confirm')
      }
    }
  },
  // 生命周期 - 创建完成（可以访问当前this实例）
  created () {

  },
  // 生命周期 - 挂载完成（可以访问DOM元素）
  mounted () {
    this.getCartList()
  },
  beforeCreate () { }, // 生命周期 - 创建之前
  beforeMount () { }, // 生命周期 - 挂载之前
  beforeUpdate () { }, // 生命周期 - 更新之前
  updated () { }, // 生命周期 - 更新之后
  beforeDestroy () { }, // 生命周期 - 销毁之前
  destroyed () { }, // 生命周期 - 销毁完成
  activated () { }, // 如果页面有keep-alive缓存功能，这个函数会触发
}
</script>

<style lang='scss'>
@import "../assets/scss/mixin.scss";
@import "../assets/scss/config.scss";

.cart {
  .wrapper {
    background-color: #f5f5f5;
    padding-top: 30px;
    padding-bottom: 114px;
    .cart-box {
      background-color: #fff;
      font-size: 14px;
      color: #999999;
      text-align: center;
      .cart-item-head {
        display: flex;
        height: 79px;
        line-height: 79px;
        .col-1 {
          flex: 1;
        }
        .col-2 {
          flex: 2;
        }
        .col-3 {
          flex: 3;
        }
      }
      .cart-item-list {
        .cart-item {
          display: flex;
          height: 125px;
          border-top: 1px solid #e5e5e5;
          font-size: 16px;
          align-items: center;
          .item-check {
            flex: 1;
            cursor: pointer;
          }
          .item-name {
            flex: 3;
            font-size: 18px;
            color: #333333;
            display: flex;
            align-items: center;
            img {
              width: 80px;
              height: 80px;
              // vertical-align: middle;
            }
            span {
              box-sizing: border-box;
              width: 328px;
              display: inline-block;
              padding-left: 30px;
              overflow: hidden;
              text-overflow: ellipsis;
              white-space: nowrap;
            }
          }
          .item-price {
            flex: 1;
            color: #333333;
          }
          .item-num {
            flex: 2;
            .num-box {
              display: inline-block;
              width: 150px;
              height: 40px;
              line-height: 40px;
              border: 1px solid #e5e5e5;
              font-size: 14px;
              a {
                display: inline-block;
                width: 50px;
                color: #333333;
              }
              span {
                display: inline-block;
                width: 50px;
                color: #333333;
              }
            }
          }
          .item-total {
            flex: 1;
            color: #ff6600;
          }
          .item-del {
            flex: 1;
            width: 14px;
            height: 12px;
            background: url("/imgs/icon-close.png") no-repeat center;
            background-size: contain;
            cursor: pointer;
          }
        }
      }
    }
    .order-wrap {
      font-size: 14px;
      color: #666666;
      margin-top: 20px;
      height: 50px;
      line-height: 50px;
      .cart-tip {
        a {
          color: #666666;
          margin-right: 37px;
        }
        span {
          color: $colorA;
          margin: 0 5px;
        }
      }
      .total {
        color: $colorA;
        font-size: 14px;
        span {
          font-size: 24px;
        }
        a {
          width: 202px;
          height: 50px;
          line-height: 50px;
          font-size: 18px;
          margin-left: 37px;
        }
      }
    }
  }
}
.checkbox {
  display: inline-block;
  width: 22px;
  height: 22px;
  border: 1px solid #e5e5e5;
  vertical-align: middle;
  margin-right: 17px;
  cursor: pointer;
  &.checked {
    background: url("/imgs/icon-gou.png") #ff6600 no-repeat center;
    background-size: 16px 12px;
    border: none;
  }
}
</style>